Beautiful pics! I'm still green so can you tell me why she switched from 1/400 to 1/1600 for the second shot? Also, which 100-400 lens is she using and now does she like it?

Biden's most truthful quote ever came during his first press conference, 03/25/21.
Drum roll please...... "I don't know, to be clear." and THAT is one promise he's kept!!!